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NEL, L. Dr. A. L Hall, F.R.S.. Nature 177, 409 (1956). https://doi.org/10.1038/177409a0
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DOI: https://doi.org/10.1038/177409a0
Nature volume 177, page 409 (1956)
NEL, L. Dr. A. L Hall, F.R.S.. Nature 177, 409 (1956). https://doi.org/10.1038/177409a0
Issue Date:
DOI: https://doi.org/10.1038/177409a0